Loose-leaf ring binder



March 14, 1939. F. s. SCHADE LOOSE LEAF RING BINDER Filed Feb. 9, 1938 INVENTOR Y ITvmwr 8mm SEHADE A ORNEYS Patented Mar. 14, 1939 messes UNITED smrss garter GFFIQE 2 LOOSE-LEAF RING BINDER Frank Stanley Schade, Holyoke, Mass., assignor to National Blank Book Company, Holyoke, Mass, a corporation of Massachusetts Application February 9, 1938, Serial No. 189,552 5 Claims. (01. 129-4) This invention relates to improvements in loose leaf ring books and refers particularly to an improved flyleaf structure to be usedto help the covers move the pack of loose leaf sheets on 5 the rings of the binder when the book is being opened or closed.

The advantages of the particular structure and the means employed to accomplish it can best be understood by reference to the subsequent description and the accompanying drawing in Which- Fig. 1 is an end view of a loose leaf ring binder employing the flyleaf structure, certain parts being broken away for clearness;

16 Fig. 2 is a perspective View of the flyleaf itself;

and

Fig. 3 is a view similar to Fig. 1 but with the covers of the book at a semi-closed position.

In the drawing, the flyleaf structure is shown 20 associated with one well known form of ring binder, the particular binder being equippedwith a lever means to separate and close the binding rings. Thus, in Fig. 1, the ring binder consists of covers I and 2 hinged at 3 to a back panel portion 5. Ring mechanism 6 is, as indicated, pivotally supported by pintles 8 and 9 on a piano hingef construction extending from each cover. A manually operable lever II is located at one end of the ring binder mechanism and is used to separate or close the rings I2. This particular ring binder construction is well known and is not shown.

The new flyleaf structures 15, one for each cover and shown in position in ,Fig. 1 to support a pack I! of loose leaf sheets, are positioned on the ring mechanism by appropriate slots [6, see Fig. 2, through which the rings l2 pass. The flyleaf structure itself consists of a strip iii of fiber or other su table material of substantial width and stiifness to which is attached along one edge by rivets 2!] an upstanding flange 2|, as shown. Flange 2| has a hook-shaped arcuate free edge 22 which is constructed to cooperate with a similar curved bearing surface or dome 25 on a memher 23 of yoke-like form suitably mounted on the spring plate 24 of the ring mechanism.

As is clear in Figs. 1 and 3, the member 23 has a dome 25 for each edge 22 of each flyleaf 15. Of course the particular way of providing the structure of the two domes 25 in relation to the other parts may vary. I have shown a simple inexpensive sheet metal structure, made of a single piece. In cross-section it is shaped as a yoke. In length it conveniently equals the length of the flange 2| seen in Fig. 2. The length of the flange 2| is shown a little less than the strip IS. The latter is conveniently made a little less than the length of the back panel 5. Consequently, the ends of the fiyleaf structure and the support for such structure in the closed position of the binder will be spaced back slightly from the ends. of the book. This gives a better appearance.

The function of the apparatus is indicated in Figs. 1 and 3. I have shown therein a sheet pack I! on the left-hand flyleaf l5, but another pack can be considered as on the right-hand fiyleaf l5. Assume that the rings 12 are carrying the maximum number of sheets that the binder will hold and that the rings are two or more inches in diameter. Such a large binder with so many sheets ordinarily presents some difficulties in operation. With my structure the book may be closed from the open position of Fig. 1 to the closed position of Fig. 3 indicated by dotted lines of cover parts I and 2, and of fiyleaf elements IS, with considerable advantage. As the covers are raised they lift the outer ends of stiff fiyleaves H5. The inner ends, hooks 22, slide on domes 25. Thus, the flyleaves 15 support the sheets thereon and guide them in a predetermined path of special character to the closed position. The supported pack on each flyleaf swings about a center 25 which is the center for the curvature of the dome 25. Each fiyleaf has a different center and the two are spaced as indicated. They are fairly close to the longitudinal axis of the rings, but not on that axis. The structure is exceedingly simple and inexpensive and the parts do not interfere one with another, the slots 16 and the holes in the sheets of the pack being large enough to give play enough for the desired action. The capacity of the book is not lessened by reason of the special flyleaf lifting arrangement, and the bother and expense of more complicated mechanism for lifting are avoided.

My arrangement will keep the sheets of a large book in good order during a long life of severe use.

Having disclosed my improvements, I claim:

1. A ring binder comprising loose leaf ring mechanism and rings, a longitudinal support arranged inside said rings, said support having a yoke-shaped cross-section giving a double arched form with the centers of the arches arranged on opposite sides of the longitudinal axis of the rings, tWoflyleaves, each threaded on the rings and having an upstanding flange with a hooked edge to hook on and slide over one of said arches,

whereby the flyleaves may support and turn with sheets about the centers of the two arches.

2. A ring binder including a support for the inner edge of a flyleaf threaded on the rings, said support having an arched form with a center at one side and close to the axis of the rings, a stiiT fiyleaf having a flange at its inner edge extending to and curved over said arch-formed support for sliding engagement therewith.

3. The structure of foregoing claim 2 having a second flyleaf and arch-formed support arranged on the opposite side of the ring axis the two flyleaves being dimensioned to cooperate and support the outside sheets in a full pack of loose leaf sheets when the binder is in closed position.

4. Ring binder mechanism comprising in combination rings, metal parts to support and open and close the rings, a sheet metal support for flyleaves, said support being mounted to extend longitudinally inside the rings with its top side close to the axis of the rings, the top side of said support being shaped in cross-section into the form of a double arch, one arch on each side of the ring axis and about level therewith, a flyleaf mounted on each arch, such flyleaf having an upstanding flange with a curved edge to lie and slide on its arch for support and guidance.

5. A ring binder comprising a back portion and hinged covers, rings and manipulating mechanism therefor mounted inside the back portion and a cover plate for said mechanism, a support mounted above the cover plate and extending longitudinally of said plate to form a support for fiyleaves, said support having the cross-sectional form of a double arch, with one of the arches arranged parallel to, at about the level of and at each side of the axis of the rings, a stiff flyleaf for each side of the binder, an upstanding flange at the inner edge of each flyleaf, such flange being bent at its outer end to engage the adjacent arch of said support to be supported and guided thereby when the binder is opened and closed.

FRANK STANLEY SCHADE. 

